That finding comes from a Congressional Research Service memo written in June. Avik Roy has obtained a copy, and provides the details:
As of May 31, 2013, when the CRS analysis was completed, the White House had yet to meet 9 of 12 deadlines from the first year after the Affordable Care Act was enacted. It failed to meet 22 of 53 deadlines in the second year; another 8 became moot after Congress did not appropriate funds to complete the assigned tasks. In year three, the administration missed 10 out of 17 deadlines. That’s a total of 41 out of 82 deadlines missed.
If you exclude the 9 deadlines that became moot because Congress never appropriated the funds to meet them, the Obama administration missed 41 out of 73 deadlines, or 56 percent. [Forbes, August 18]
Only 32 deadlines have been completed on-time or early. Here is the breakdown from Roy’s analysis of the CRS report: